package util;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class StringUtil {

	/**
	 * 判断是否为空
	 * 
	 * @param str
	 * @return
	 */
	public static boolean isEmpty(String str) {
		if (str == null || "".equals(str.trim())) {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * 判断是否不为空
	 * 
	 * @param str
	 * @return
	 */
	public static boolean isNotEmpty(String str) {
		if (str != null && !"".equals(str.trim())) {
			return false;
		} else {
			return true;
		}
	}

	/**
	 * 判断是否为纯数字
	 * 
	 * @param str
	 * @return
	 */
	public static boolean isNum(String str) {
		String regex = "\\d+-?\\d+|\\d";
		return str.matches(regex);
	}

	/**
	 * 电话校验
	 * 
	 * @param phone
	 * @return
	 */
	public static boolean checkPhone(String str) {
		Pattern p = null;
		Matcher m = null;
		boolean b = false;
		p = Pattern.compile("^[1][3,4,5,7,8][0-9]{9}$"); // 验证手机号
		m = p.matcher(str);
		b = m.matches();
		return b;
	}

	public static boolean checkNumChar(String str) {
		Pattern p = null;
		Matcher m = null;
		boolean b = false;
		p = Pattern.compile("^[A-Za-z0-9]+$");
		m = p.matcher(str);
		b = m.matches();
		return b;
	}

	// 数字
	public static final String REG_NUMBER = ".*\\d+.*";
	// 小写字母
	public static final String REG_UPPERCASE = ".*[A-Z]+.*";
	// 大写字母
	public static final String REG_LOWERCASE = ".*[a-z]+.*";
	// 特殊符号(~!@#$%^&*()_+|<>,.?/:;'[]{}\)
	public static final String REG_SYMBOL = ".*[~!@#$%^&*()_+|<>,.?/:;'\\[\\]{}\"]+.*";

	public static boolean checkPasswordRule(String password) {

		// 密码为空及长度大于8位小于30位判断
		if (password == null || password.length() < 8 || password.length() > 30)
			return false;

		int i = 0;

		if (password.matches(StringUtil.REG_NUMBER))
			i++;
		if (password.matches(StringUtil.REG_LOWERCASE))
			i++;
		if (password.matches(StringUtil.REG_UPPERCASE))
			i++;
		if (password.matches(StringUtil.REG_SYMBOL))
			i++;

		if (i < 3)
			return false;

		return true;
	}

	final static Map<Integer, String> zoneNum = new HashMap<Integer, String>();

	static {
		zoneNum.put(11, "北京");
		zoneNum.put(12, "天津");
		zoneNum.put(13, "河北");
		zoneNum.put(14, "山西");
		zoneNum.put(15, "内蒙古");
		zoneNum.put(21, "辽宁");
		zoneNum.put(22, "吉林");
		zoneNum.put(23, "黑龙江");
		zoneNum.put(31, "上海");
		zoneNum.put(32, "江苏");
		zoneNum.put(33, "浙江");
		zoneNum.put(34, "安徽");
		zoneNum.put(35, "福建");
		zoneNum.put(36, "江西");
		zoneNum.put(37, "山东");
		zoneNum.put(41, "河南");
		zoneNum.put(42, "湖北");
		zoneNum.put(43, "湖南");
		zoneNum.put(44, "广东");
		zoneNum.put(45, "广西");
		zoneNum.put(46, "海南");
		zoneNum.put(50, "重庆");
		zoneNum.put(51, "四川");
		zoneNum.put(52, "贵州");
		zoneNum.put(53, "云南");
		zoneNum.put(54, "西藏");
		zoneNum.put(61, "陕西");
		zoneNum.put(62, "甘肃");
		zoneNum.put(63, "青海");
		zoneNum.put(64, "宁夏");
		zoneNum.put(65, "新疆");
		zoneNum.put(71, "台湾");
		zoneNum.put(81, "香港");
		zoneNum.put(82, "澳门");
		zoneNum.put(91, "外国");
	}

	final static int[] PARITYBIT = { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' };
	final static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };

	/**
	 * 身份证验证
	 *
	 * @param certNo 号码内容
	 * @return 是否有效 null和"" 都是false
	 */
	public static boolean isIDCard(String certNo) {
		if (certNo == null || (certNo.length() != 15 && certNo.length() != 18))
			return false;
		final char[] cs = certNo.toUpperCase().toCharArray();
		// 校验位数
		int power = 0;
		for (int i = 0; i < cs.length; i++) {
			if (i == cs.length - 1 && cs[i] == 'X')
				break;// 最后一位可以 是X或x
			if (cs[i] < '0' || cs[i] > '9')
				return false;
			if (i < cs.length - 1) {
				power += (cs[i] - '0') * POWER_LIST[i];
			}
		}

		// 校验区位码
		if (!zoneNum.containsKey(Integer.valueOf(certNo.substring(0, 2)))) {
			return false;
		}

		// 校验年份
		String year = null;
		year = certNo.length() == 15 ? getIdcardCalendar(certNo) : certNo.substring(6, 10);

		final int iyear = Integer.parseInt(year);
		if (iyear < 1900 || iyear > Calendar.getInstance().get(Calendar.YEAR))
			return false;// 1900年的PASS，超过今年的PASS

		// 校验月份
		String month = certNo.length() == 15 ? certNo.substring(8, 10) : certNo.substring(10, 12);
		final int imonth = Integer.parseInt(month);
		if (imonth < 1 || imonth > 12) {
			return false;
		}

		// 校验天数
		String day = certNo.length() == 15 ? certNo.substring(10, 12) : certNo.substring(12, 14);
		final int iday = Integer.parseInt(day);
		if (iday < 1 || iday > 31)
			return false;

		// 校验"校验码"
		if (certNo.length() == 15)
			return true;
		return cs[cs.length - 1] == PARITYBIT[power % 11];
	}

	private static String getIdcardCalendar(String certNo) {
		// 获取出生年月日
		String birthday = certNo.substring(6, 12);
		SimpleDateFormat ft = new SimpleDateFormat("yyMMdd");
		Date birthdate = null;
		try {
			birthdate = ft.parse(birthday);
		} catch (java.text.ParseException e) {
			e.printStackTrace();
		}
		Calendar cday = Calendar.getInstance();
		cday.setTime(birthdate);
		String year = String.valueOf(cday.get(Calendar.YEAR));
		return year;
	}

	public static boolean isEmail(String email) {
		if (null == email || "".equals(email)) {
			return false;
		}
		String regEx1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
		Pattern p = Pattern.compile(regEx1);
		Matcher m = p.matcher(email);
		if (m.matches()) {
			return true;
		} else {
			return false;
		}
	}

	public static void main(String[] args) {
		if (false && false) {
			System.out.println(11);
		}else {
			System.out.println(22);
		}
	}

	/**
	 * 手机号验证
	 * 
	 * @return 验证通过返回true
	 */
	public static boolean isMobile(String tel) {
		if (null == tel || "".equals(tel)) {
			return false;
		}
		String regex = "^((13[0-9])|(14[5,7,9])|(15([0-3]|[5-9]))|(17[0,1,3,5,6,7,8])|(18[0-9])|(19[8|9])|(16[6]))\\d{8}$";
		Pattern p = Pattern.compile(regex);
		Matcher m = p.matcher(tel);
		if (m.matches()) {
			return true;
		} else {
			return false;
		}
	}
	
	/**
	 * 校验字长
	 * @return
	 */
	public static boolean checkLenth(String str,int lenth) {
		return str.length()>lenth;
	}
}
